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1,1, KERMODE. v GODKING RANGE AND THE LIKE ADAPTED T0 BURN HEAVY OILJASfUELQ APPLICATION FILED NOV- I2. 1918.

' Patented Dee. 9,1919.

5 SHEETS-SHEET I I 1,]. KERMODE. COOKING RANGE AND THE LIKE ADAPIED IOBURN HEAVY OIL AS FUEL.

APPLICATION FILED NOV. 12. 19W. 9,

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lnuemwr:

1.]. KERMODE.

APPLICATION H,LED NOV. 12, I918.

Patented Dec.

COOKING RANGE AND THE LIKE ADAPTED T0 BURN HEAVY OIL AS FUEL 1 ,324,314

iahm J1 Kermwde, 4y WM g g J. J. KERMODE.

COOKING RANGE AND THE LIKE ADAFTED T0 BURN HEAVY 0. AS FUEL.

APPLICATION FILED NOV. I2, 1918. Patented Dec. 9,1919.

A Lil 'lnlzenfiom Jbkn J1 Kermade,

1.]. KERMODE.

'COOKING RANGE AND THE LIKE ADAPTED T0 BURN HEAVY OIL AS FUEL.

APPLICATION FILED NOV. 12. 1919.

1,324,314. Patented Dec. 9,1919. v

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UNITED stares a an arr JOHN JONATI'IAN KEBMODE, OF LIVERPOOL, ENGLAND.

confine-R NGE AND THE LIKE ADAPIEI) To BURN HEAVY oIn AS FiIEL.

To all'whom it may concern-.-

Be it known that I, JOHN JONATHAN KERMODE, a subject of the King of Great Britaimresiding in Liverpool, in the county of Lancaster, England, have invented certain new and useful Improvements in Cooking-Bange's'and the like Adapted to Burn is a specification.

This invent on relates to cooking ranges, and particularly to cooklng ranges for ships galleys, and the object is to improve the construction of such ranges so that they may be adapted to burn heavy oils as fuels. The invention is applicable toexisting models of ranges as well as to new designs, and the ar rangement" is preferably such that the range is adapted to be readily converted from an oil-burning to a coal-burning range, and vice 'versa.

, According to the invention, liquid fuel burning range is constructed as follows jThe fire bars, in cases Where coal burning rangesare converted, are removed and the ash pit space is added to the space above the fire bars to provide the cubical contents necessary for the proper combustion of heavy oil; the front, back, sides and bottom of the space so provided are lined With firebrick or other suitable refractory material,

to protect the iron Work and to form the nec-' j rectangular box or'combustion chamber With an open top, and the burners are fitted to the front side of the box, which side is also provided With the air inlets and the means for controllingthe air supply. The top of the box thus formedmay be fitted with a perforated top throughvvhich the hot gases pass 'on'their way to the fines .Which serve thehot plate and surround the ovens and lead to" the outlet flue; the perforated top servesto insure complete combustion and to prevent fluctuations of the heating effect;

Specificationof Letters Patent.

Heavy Oils as.Fuel,-of which the following Patented Dec. 9, 1919.

Application filed November 12, 1918. Serial No. 262,208.

the'top may be a saddle-shaped perforated plate of refractory material or of metal protected by refractory material located over the combustion chamber, and above this plate may be fitted a second perforated .plate or grld adapted to extract heat from the gases andin turn to heat a griller.

The remaininv ordinary parts of the range are utilized in the usual manner.

The burner may be of the jet type supplied v vith air under pressure from a rotary or reclprocating pump driven in any conven ent manner, and the oil supply may be from a tank located at a height sufficient to give the necessary head,or, if thisis not practicable, from a closed tankunder the necessary air pressure obtained by means of a hand pump to provide the desired head.

The application of the invention to a typical construction of ships galley stove is illustrated in the accompanying drawings, in which Figure 1 is an elevation of the general arrangement.

Fig. 2 is an elevation in longitudinal section on the line II, II, of Fig. 3.

Fig. 3 is an elevation in section on the line III, III, f Fig. 2:

F ig; 4 is a plan in section on the line IV, IV, of Fig. 2: i

Fig. 5 is a plan in section 011 the line V, V, of Fig. 3: i

Fig. 6 is a view similar to Fig. 1 and shows the stove converted so as to adapt it for coal burning:

, Fig. 7 is a sectional elevationcorresponding With the upper portion of Fig. 2, and showing a modification, and

Fig. 8 is a transverse section correspond ing With the upper portion of Fig. 3, also illustrating this modification. 3

A is the stove, a the hot plate, a the 1 ovens, a the door which serves for coal firing, a the bounding walls of What in the ordinary construction would be the ash pit, and a the usual arrangement of refractory lining used to protect What in the ordinary construction would be the combustion chamber above the firebars see Fig. 6). In order to adapt the stove for liquid fuel burning, the fire bars would be removed should these have been originally fitted; the combustion chamber is enlarged by the addition of the ash pit space, the latter, as a detach able unit B, is fitted for this purpose.

The unit B consists of a casing built up of side plates 6 a back plate 79 a bottom plate 22* and a front plate 6 connected by suitable angles 6 and lined with suitable refractory material Z), this unit B being adapted to he slid into position in the ash pit space from the front, as shown in Figs. 1, 2, 3, 4 and 5; in Fig. 6 a stove is shown from which the unit B has been removed, and an interchangeable front 6 takes the place of the front plate 5 The burner G, which may be of any usual type, is carried from a fixed bracket 0 bolted to the front of the stove below the coal firing door a The burner is pivotally carried about the axis 0 two co-axial plugs fitting the taper bores of the shells of oil and air connections 0 and 0* carried by the fixed bracket 0 (see Figs. 1 and 2). The interiors of the plugs communicate by an oil pipe 0 and air pipe 0 with the burner, which latter is fitted with the usual means for obtaining the necessary adjustments of air and oil.

The burner usually has an air inducing casing c and the flame fromthe burner enters the space of the combustion chamber B through an opening D in the refractory material with laterally sliding doors d and (Z carried in a frame 03 and by movement of which the extent of the opening may be regulated.

, E E are the halves of a perforated top plate each half of which in the construction shown is in the form of a saddle-shaped plate of fire-brick or the like refractory material; these plates serve to insure complete combustion and act as a heat reservoir to prevent fluctuations of the heating effect.

The bottom edges of these plates may rest on the ledge usually provided to take the fire-bars and the hot gases pass up through the central opening 6 under the hot plate, around the ovens and thence to the flue F.

g is the oil supply pipe leading from the oil tank G through the control valve to the burner; H is the air supply pipe, k the control valve therefor, h a branch pipe controlled by the valve and ]L3 the pipe for discharging surplus air into the flue.

When it is desired to convert the stove into a coal burning stove, the burner O with its connections may be removed or turned up about the axis 0 so as to leave a clear way for the withdrawal of the unit B; the blocks E and E are removed and replaced by fire-bars K as shown in Fig. 6.

In converting the stove from one use to "the other any refractory material needed make joint between the replaceable and the fixed portions is applied in a plastic condition.

The shape of'the replaceable combustion chamber unit will vary in stoves of difierent types and in like" manner the top plate E E may be constructed to suit the type of flue.

A modified form of top plate E is shown in Figs. 7 and 8; in this case two or more bridges E of firebrick extend across the combustion chamber, studs e tapped into the cast iron portion of the stove being fitted to retain the fire brick in position; or projection 6 shown by dotted lines Fig. 7 may be fitted on each side of the fire brick bridge for the same purpose.

Both the air and the oil may be heated in any suitable manner from the otherwise waste heat in the flue gases; the location of the oil tank adjacent to the fines insures the necessary pre-heating of the oil.

In some cases a pressure burner may be employed in which case oil supplied at the necessary pressure from a tank or pump is atomized by means of a suitable atomizer fitted in the burner; or the oil may be atomized by steam, where, as on board ship, a slgpply of auxiliary steam is usually availa' e.

Natural or forced draft may be employed.

In new types of stoves constructed specially for the purpose, the parts peculiar to the oil-burning and the parts peculiar to the coal burning, are made in the form of interchangeable parts adapted to be inserted 1n or to be withdrawn from the stove as units, so that the vconversion from theone system to the other can be effected readily by interchange of the units.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performechl declare that what I claim is 1. A coal burning range havin a combustion chamber extending the full height thereof and comprising a metal casing, a refractory lining permanently carried in the upper portion of the casing, a refractory lining formed as a complete unit removably carried in the lower portion of said casing and having an opening in one wall, and an injector burner adapted to project its flame through said opening, said burner being movable to allow removalof saidvunit.

2. A coal burning range having a combustion chamber extending the full height thereof and comprising a metal casinghaving a permanent lining of refractory material in the upper part thereof and inwardly projecting supporting ledges at the lower part of said permanent lining, refractory material removably supported upon saidledges, a removable refractory lining comprlsinga bottom and slde walls con nected together by angle iron and removable as a complete unit from the lower part of said casing, said unit having an opening in one wall, and an injector burner for discharging flame through said opening, and a bracket carried by the casing to which said burner is pivotally connected.

10 3. A coal burnmg range having the ash pit thereof provided with a removable lining of refractory material having an opening in one wall and an injector burner for discharging flame through said opening.

In Witness whereof I have set my hand in 15 presence of two witnesses.

JOHN JONATHAN KERMODE. Witnesses: V

JOSEPH E. Hmsr, MARGUERITA JONES. 

